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/*
* Copyright (c) 2021 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "pnat.h"
#include <pnat/pnat.api_enum.h>
#include <pnat/pnat.api_types.h>
#include <vlibmemory/api.h>
#include <vnet/fib/fib_table.h>
#include <vnet/ip/ip.h>
#include <vnet/ip/ip_types_api.h>
#include <vnet/ip/reass/ip4_sv_reass.h>
#include <vnet/ip/reass/ip6_full_reass.h>
#include <vnet/ip/reass/ip6_sv_reass.h>
/*
* This file contains the API handlers for the pnat.api
*/
#define REPLY_MSG_ID_BASE pm->msg_id_base
#include <vlibapi/api_helper_macros.h>
static void vl_api_pnat_binding_add_t_handler(vl_api_pnat_binding_add_t *mp) {
pnat_main_t *pm = &pnat_main;
vl_api_pnat_binding_add_reply_t *rmp;
u32 binding_index;
int rv = pnat_binding_add(&mp->match, &mp->rewrite, &binding_index);
REPLY_MACRO2_END(VL_API_PNAT_BINDING_ADD_REPLY,
({ rmp->binding_index = binding_index; }));
}
static void
vl_api_pnat_binding_attach_t_handler(vl_api_pnat_binding_attach_t *mp) {
pnat_main_t *pm = &pnat_main;
vl_api_pnat_binding_attach_reply_t *rmp;
int rv;
/* Ensure that the interface exists */
if (!vnet_sw_if_index_is_api_valid(mp->sw_if_index)) {
rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
goto bad_sw_if_index;
}
rv =
pnat_binding_attach(mp->sw_if_index, mp->attachment, mp->binding_index);
bad_sw_if_index:
REPLY_MACRO_END(VL_API_PNAT_BINDING_ATTACH_REPLY);
}
static void
vl_api_pnat_binding_detach_t_handler(vl_api_pnat_binding_detach_t *mp) {
pnat_main_t *pm = &pnat_main;
vl_api_pnat_binding_detach_reply_t *rmp;
int rv;
/* Ensure that the interface exists */
if (!vnet_sw_if_index_is_api_valid(mp->sw_if_index)) {
rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
goto bad_sw_if_index;
}
rv =
pnat_binding_detach(mp->sw_if_index, mp->attachment, mp->binding_index);
bad_sw_if_index:
REPLY_MACRO_END(VL_API_PNAT_BINDING_DETACH_REPLY);
}
static void vl_api_pnat_binding_del_t_handler(vl_api_pnat_binding_del_t *mp) {
pnat_main_t *pm = &pnat_main;
vl_api_pnat_binding_del_reply_t *rmp;
int rv = pnat_binding_del(mp->binding_index);
REPLY_MACRO_END(VL_API_PNAT_BINDING_DEL_REPLY);
}
/*
* Workaround for a bug in vppapigen that doesn't register the endian handler
* for _details messages. When that's fixed it should be possible to use
* REPLY_MACRO_DETAILS4_END and not have to care about endian-ness in the
* handler itself.
*/
#define vl_endianfun
#include <pnat/pnat.api.h>
#undef vl_endianfun
static void send_bindings_details(u32 index, vl_api_registration_t *rp,
u32 context) {
pnat_main_t *pm = &pnat_main;
vl_api_pnat_bindings_details_t *rmp;
pnat_translation_t *t = pool_elt_at_index(pm->translations, index);
/* Make sure every field is initiated (or don't skip the clib_memset()) */
REPLY_MACRO_DETAILS4(VL_API_PNAT_BINDINGS_DETAILS, rp, context, ({
rmp->match = t->match;
rmp->rewrite = t->rewrite;
/* Endian hack until apigen registers _details
* endian functions */
vl_api_pnat_bindings_details_t_endian(rmp);
rmp->_vl_msg_id = htons(rmp->_vl_msg_id);
rmp->context = htonl(rmp->context);
}));
}
static void vl_api_pnat_bindings_get_t_handler(vl_api_pnat_bindings_get_t *mp) {
pnat_main_t *pm = &pnat_main;
vl_api_pnat_bindings_get_reply_t *rmp;
i32 rv = 0;
if (pool_elts(pm->translations) == 0) {
REPLY_MACRO(VL_API_PNAT_BINDINGS_GET_REPLY);
return;
}
/*
* "cursor" comes from the get call, and allows client to continue a dump
*/
REPLY_AND_DETAILS_MACRO(VL_API_PNAT_BINDINGS_GET_REPLY, pm->translations, ({
send_bindings_details(cursor, rp, mp->context);
}));
}
static void send_interfaces_details(u32 index, vl_api_registration_t *rp,
u32 context) {
pnat_main_t *pm = &pnat_main;
vl_api_pnat_interfaces_details_t *rmp;
pnat_interface_t *i = pool_elt_at_index(pm->interfaces, index);
/* Make sure every field is initiated (or don't skip the clib_memset()) */
REPLY_MACRO_DETAILS4(
VL_API_PNAT_INTERFACES_DETAILS, rp, context, ({
rmp->sw_if_index = i->sw_if_index;
clib_memcpy(rmp->enabled, i->enabled, PNAT_ATTACHMENT_POINT_MAX);
clib_memcpy(rmp->lookup_mask, i->lookup_mask,
sizeof(vl_api_pnat_mask_t) * PNAT_ATTACHMENT_POINT_MAX);
/* Endian hack until apigen registers _details
* endian functions */
vl_api_pnat_interfaces_details_t_endian(rmp);
rmp->_vl_msg_id = htons(rmp->_vl_msg_id);
rmp->context = htonl(rmp->context);
}));
}
static void
vl_api_pnat_interfaces_get_t_handler(vl_api_pnat_interfaces_get_t *mp) {
pnat_main_t *pm = &pnat_main;
vl_api_pnat_interfaces_get_reply_t *rmp;
i32 rv = 0;
if (pool_elts(pm->interfaces) == 0) {
REPLY_MACRO(VL_API_PNAT_INTERFACES_GET_REPLY);
return;
}
/*
* "cursor" comes from the get call, and allows client to continue a dump
*/
REPLY_AND_DETAILS_MACRO(
VL_API_PNAT_INTERFACES_GET_REPLY, pm->interfaces,
({ send_interfaces_details(cursor, rp, mp->context); }));
}
/* API definitions */
#include <vnet/format_fns.h>
#include <pnat/pnat.api.c>
/* Set up the API message handling tables */
clib_error_t *pnat_plugin_api_hookup(vlib_main_t *vm) {
pnat_main_t *pm = &pnat_main;
pm->msg_id_base = setup_message_id_table();
return 0;
}
/*
* Register the plugin and hook up the API
*/
#include <vnet/plugin/plugin.h>
VLIB_PLUGIN_REGISTER() = {
.version = "0.0.1",
.description = "Policy 1:1 NAT",
};
clib_error_t *pnat_init(vlib_main_t *vm) {
pnat_main_t *pm = &pnat_main;
memset(pm, 0, sizeof(*pm));
return pnat_plugin_api_hookup(vm);
}
VLIB_INIT_FUNCTION(pnat_init);
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